SlideShare a Scribd company logo
At-a-Station geometry
Downstream geometry
22-07-2020 SPC LMT 1
Hydraulic Geometry of a river
Hydraulic Geometry of a river
• At-a-Station geometry
• Downstream geometry
2SPC LMT22-07-2020
• Introduced by Luna Leopold and Maddock (1953).
• Hydraulic geometry deals with variation in channel characteristics
in relation to variations in discharge.
• Two sets of variations take place:
• variations at a particular cross section (at-a-station) and
• variations along the length of the stream (downstream variations).
• Hydraulic geometry describes the manner in which geometric parameters
changes with the discharge (Q in cfs-cubic feet per second).
• hydraulic characteristics of stream channels —
• d=depth(mean water depth),
• w=width(water-surface width),
• v=Velocity (mean velocity through the cross section),
• L=suspended load (usually concentration or transport, or both, of
suspended sediment),
• downstream slope, and
• channel friction.
are measured quantitatively and vary with discharge as simple power
functions at a given river cross section.
SPC LMT 322-07-2020
SPC LMT 422-07-2020
22-07-2020 SPC LMT 5
Some observations while studying H.G.
• b+f+m = 1 and a*c*k = 1 is not applicable to
bed-rock channels.
• At-a-station : Q (discharge) obtained at
various levels is different during at-a-station.
Water levels (WL- 1,2,3,4) show difference in
discharge at every level.
• Downstream: Q probably remains constant,
but w, velocity of water and depth varies
from D1 to D2 to D3 to D4.
22-07-2020 SPC LMT 6
At-a-station
Downstream
Relation between Q ,w ,v ,d, L.
• These relationships at a given channel cross section and downstream when plotted on graphs
are greatly similar even for river systems very different in physiographic setting. The
relationships are described by the term "hydraulic geometry‘.
22-07-2020 SPC LMT 7
Higher ‘ b’ value (width)=
indicates river must be from desert / glacial areas;
huge deposition of sand and silt.
Higher ‘ f’ value (depth)=
rivers from humid areas; heavy rains;
huge deposition of silt and clay; high SSL(suspended sediment
load).
Higher ‘ m’ value (velocity)= Rejuvenated rivers
Presence of gorges and knickpoints
Change in Q, w, v, d,
and L with respect to
the stream reaches.
22-07-2020 SPC LMT 8
22-07-2020 SPC LMT 9
Example of At-a-station geometry
Example of Downstream geometry
22-07-2020 SPC LMT 10
SPC LMT 1122-07-2020
Thank you..
22-07-2020 SPC LMT 12

More Related Content

What's hot

Drainage pattern & morphometric analyses of drainage basins
Drainage pattern & morphometric analyses of drainage basinsDrainage pattern & morphometric analyses of drainage basins
Drainage pattern & morphometric analyses of drainage basins
UjjavalPatel16
 
Davis cycle of erosion
Davis cycle of erosionDavis cycle of erosion
Davis cycle of erosion
Pramoda Raj
 
Fluvial morphology
Fluvial morphologyFluvial morphology
Fluvial morphology
Kella Randolph
 
Drainage basins
Drainage basinsDrainage basins
Drainage basins
Shuvo Roy
 
floodplain presentation
floodplain presentationfloodplain presentation
floodplain presentation
rupankar456
 
Flood frequency analyses
Flood frequency analysesFlood frequency analyses
Flood frequency analyses
vivek gami
 
Hydrology
HydrologyHydrology
Drainage pattern and their significance
Drainage pattern and their significanceDrainage pattern and their significance
Drainage pattern and their significance
AvinashAvi110
 
Types of channel
Types of channelTypes of channel
Types of channelMs Geoflake
 
Floodplain presentation
Floodplain presentationFloodplain presentation
Floodplain presentation
Olexiy Dubilet
 
Eastern Coast of Bangladesh
Eastern Coast of BangladeshEastern Coast of Bangladesh
Eastern Coast of Bangladesh
ZahidHasan166
 
Stream flow
Stream flow Stream flow
Stream flow
Meesum Zaidi
 
Seminar on Hydrological modelling
Seminar on Hydrological modellingSeminar on Hydrological modelling
Seminar on Hydrological modelling
vishvam Pancholi
 
Groundwater Modeling and GIS
Groundwater Modeling and GISGroundwater Modeling and GIS
Groundwater Modeling and GIS
Prof. A.Balasubramanian
 
River Channel Processes & Landforms
River Channel Processes & LandformsRiver Channel Processes & Landforms
River Channel Processes & LandformsMalia Damit
 
Flood risk mapping using GIS and remote sensing
Flood risk mapping using GIS and remote sensingFlood risk mapping using GIS and remote sensing
Flood risk mapping using GIS and remote sensing
Rohan Tuteja
 
Sediments transport
Sediments transportSediments transport
Sediments transport
Jyoti Khatiwada
 
Ground water prospects map
Ground water prospects mapGround water prospects map
Ground water prospects map
Thupili Prem Sai Reddy
 
Stream order
Stream orderStream order
Stream order
Surjya Kumar Saikia
 

What's hot (20)

Drainage pattern & morphometric analyses of drainage basins
Drainage pattern & morphometric analyses of drainage basinsDrainage pattern & morphometric analyses of drainage basins
Drainage pattern & morphometric analyses of drainage basins
 
Davis cycle of erosion
Davis cycle of erosionDavis cycle of erosion
Davis cycle of erosion
 
Fluvial morphology
Fluvial morphologyFluvial morphology
Fluvial morphology
 
Drainage basins
Drainage basinsDrainage basins
Drainage basins
 
floodplain presentation
floodplain presentationfloodplain presentation
floodplain presentation
 
Flood frequency analyses
Flood frequency analysesFlood frequency analyses
Flood frequency analyses
 
Fluvial Geomorphology
Fluvial GeomorphologyFluvial Geomorphology
Fluvial Geomorphology
 
Hydrology
HydrologyHydrology
Hydrology
 
Drainage pattern and their significance
Drainage pattern and their significanceDrainage pattern and their significance
Drainage pattern and their significance
 
Types of channel
Types of channelTypes of channel
Types of channel
 
Floodplain presentation
Floodplain presentationFloodplain presentation
Floodplain presentation
 
Eastern Coast of Bangladesh
Eastern Coast of BangladeshEastern Coast of Bangladesh
Eastern Coast of Bangladesh
 
Stream flow
Stream flow Stream flow
Stream flow
 
Seminar on Hydrological modelling
Seminar on Hydrological modellingSeminar on Hydrological modelling
Seminar on Hydrological modelling
 
Groundwater Modeling and GIS
Groundwater Modeling and GISGroundwater Modeling and GIS
Groundwater Modeling and GIS
 
River Channel Processes & Landforms
River Channel Processes & LandformsRiver Channel Processes & Landforms
River Channel Processes & Landforms
 
Flood risk mapping using GIS and remote sensing
Flood risk mapping using GIS and remote sensingFlood risk mapping using GIS and remote sensing
Flood risk mapping using GIS and remote sensing
 
Sediments transport
Sediments transportSediments transport
Sediments transport
 
Ground water prospects map
Ground water prospects mapGround water prospects map
Ground water prospects map
 
Stream order
Stream orderStream order
Stream order
 

Similar to Hydraulic geometry of a river

Open channel hydraulics
Open channel hydraulicsOpen channel hydraulics
Open channel hydraulics
Lalit Thakare
 
HYDRAULIC MODELING AND FLOOD.pdf
HYDRAULIC MODELING AND FLOOD.pdfHYDRAULIC MODELING AND FLOOD.pdf
HYDRAULIC MODELING AND FLOOD.pdf
tuniseros
 
Mountain Rivers Hydraul Geom.ppt
Mountain Rivers Hydraul Geom.pptMountain Rivers Hydraul Geom.ppt
Mountain Rivers Hydraul Geom.ppt
ProfPGAgnihotri
 
Ch#1 ADVANCED OPEN CHANNEL HYDRAULICS.pdf
Ch#1 ADVANCED OPEN CHANNEL HYDRAULICS.pdfCh#1 ADVANCED OPEN CHANNEL HYDRAULICS.pdf
Ch#1 ADVANCED OPEN CHANNEL HYDRAULICS.pdf
Hadiqa Qadir
 
Presentation aboout flood routing
Presentation aboout flood routingPresentation aboout flood routing
Presentation aboout flood routing
mohammed yahyam muta
 
chapter GVF.pptx
chapter GVF.pptxchapter GVF.pptx
chapter GVF.pptx
gemadogelgalu
 
Flood routing
Flood routingFlood routing
Flood routing
vivek gami
 
Chapter 1..ppt
Chapter 1..pptChapter 1..ppt
Chapter 1..ppt
gemadogelgalu
 
Principles of groundwater flow
Principles of groundwater flowPrinciples of groundwater flow
Principles of groundwater flow
Putika Ashfar Khoiri
 
Permeability
Permeability Permeability
Permeability
M.T.H Group
 
Presentation 2 ce 801
Presentation  2  ce 801Presentation  2  ce 801
Presentation 2 ce 801
World University of Bangladesh
 
Modelling of Seawater Intrusion
Modelling of Seawater IntrusionModelling of Seawater Intrusion
Modelling of Seawater IntrusionC. P. Kumar
 
characteristics and morphological change of the river.ppt
characteristics and morphological change of the river.pptcharacteristics and morphological change of the river.ppt
characteristics and morphological change of the river.ppt
Amanuel Beza
 
C2VSim Workshop 5 - C2VSim Surface Water Representation
C2VSim Workshop 5 - C2VSim Surface Water RepresentationC2VSim Workshop 5 - C2VSim Surface Water Representation
C2VSim Workshop 5 - C2VSim Surface Water Representation
Charlie Brush
 
03 darcys law
03 darcys law03 darcys law
03 darcys law
haiifa25
 
Open channel Flow
Open channel FlowOpen channel Flow
Open channel Flow
Dr. Ezzat Elsayed Gomaa
 

Similar to Hydraulic geometry of a river (20)

Open channel hydraulics
Open channel hydraulicsOpen channel hydraulics
Open channel hydraulics
 
HYDRAULIC MODELING AND FLOOD.pdf
HYDRAULIC MODELING AND FLOOD.pdfHYDRAULIC MODELING AND FLOOD.pdf
HYDRAULIC MODELING AND FLOOD.pdf
 
Mountain Rivers Hydraul Geom.ppt
Mountain Rivers Hydraul Geom.pptMountain Rivers Hydraul Geom.ppt
Mountain Rivers Hydraul Geom.ppt
 
Ch#1 ADVANCED OPEN CHANNEL HYDRAULICS.pdf
Ch#1 ADVANCED OPEN CHANNEL HYDRAULICS.pdfCh#1 ADVANCED OPEN CHANNEL HYDRAULICS.pdf
Ch#1 ADVANCED OPEN CHANNEL HYDRAULICS.pdf
 
Presentation aboout flood routing
Presentation aboout flood routingPresentation aboout flood routing
Presentation aboout flood routing
 
Ch02intro
Ch02introCh02intro
Ch02intro
 
chapter GVF.pptx
chapter GVF.pptxchapter GVF.pptx
chapter GVF.pptx
 
Flood routing
Flood routingFlood routing
Flood routing
 
Chapter 1..ppt
Chapter 1..pptChapter 1..ppt
Chapter 1..ppt
 
63027 09
63027 0963027 09
63027 09
 
Principles of groundwater flow
Principles of groundwater flowPrinciples of groundwater flow
Principles of groundwater flow
 
Permeability
Permeability Permeability
Permeability
 
Presentation 2 ce 801
Presentation  2  ce 801Presentation  2  ce 801
Presentation 2 ce 801
 
Modelling of Seawater Intrusion
Modelling of Seawater IntrusionModelling of Seawater Intrusion
Modelling of Seawater Intrusion
 
characteristics and morphological change of the river.ppt
characteristics and morphological change of the river.pptcharacteristics and morphological change of the river.ppt
characteristics and morphological change of the river.ppt
 
03 darcys law
03 darcys law03 darcys law
03 darcys law
 
Groundwater hydrology
Groundwater hydrologyGroundwater hydrology
Groundwater hydrology
 
C2VSim Workshop 5 - C2VSim Surface Water Representation
C2VSim Workshop 5 - C2VSim Surface Water RepresentationC2VSim Workshop 5 - C2VSim Surface Water Representation
C2VSim Workshop 5 - C2VSim Surface Water Representation
 
03 darcys law
03 darcys law03 darcys law
03 darcys law
 
Open channel Flow
Open channel FlowOpen channel Flow
Open channel Flow
 

More from Lalit Thakare

Physiography of India- northern Mountains -Himalayas -Divisions of Himalayas
Physiography of India- northern Mountains -Himalayas -Divisions of HimalayasPhysiography of India- northern Mountains -Himalayas -Divisions of Himalayas
Physiography of India- northern Mountains -Himalayas -Divisions of Himalayas
Lalit Thakare
 
Location, extent, Historical background of India,
Location, extent, Historical background of India, Location, extent, Historical background of India,
Location, extent, Historical background of India,
Lalit Thakare
 
Chap 2 tropical geomorphology deep weathering in tropics - part 2
Chap 2 tropical geomorphology  deep weathering in tropics - part 2Chap 2 tropical geomorphology  deep weathering in tropics - part 2
Chap 2 tropical geomorphology deep weathering in tropics - part 2
Lalit Thakare
 
Tropical Geomorphology -weathering in Tropics - part 1- Chap 2
Tropical Geomorphology  -weathering in Tropics - part 1- Chap 2Tropical Geomorphology  -weathering in Tropics - part 1- Chap 2
Tropical Geomorphology -weathering in Tropics - part 1- Chap 2
Lalit Thakare
 
Introduction to Tropical Geomorphology
Introduction to Tropical GeomorphologyIntroduction to Tropical Geomorphology
Introduction to Tropical Geomorphology
Lalit Thakare
 
Wine tourism in nashik district rmid -2020
Wine tourism in nashik district    rmid -2020Wine tourism in nashik district    rmid -2020
Wine tourism in nashik district rmid -2020
Lalit Thakare
 
Definition of Oceanography
Definition of OceanographyDefinition of Oceanography
Definition of Oceanography
Lalit Thakare
 

More from Lalit Thakare (7)

Physiography of India- northern Mountains -Himalayas -Divisions of Himalayas
Physiography of India- northern Mountains -Himalayas -Divisions of HimalayasPhysiography of India- northern Mountains -Himalayas -Divisions of Himalayas
Physiography of India- northern Mountains -Himalayas -Divisions of Himalayas
 
Location, extent, Historical background of India,
Location, extent, Historical background of India, Location, extent, Historical background of India,
Location, extent, Historical background of India,
 
Chap 2 tropical geomorphology deep weathering in tropics - part 2
Chap 2 tropical geomorphology  deep weathering in tropics - part 2Chap 2 tropical geomorphology  deep weathering in tropics - part 2
Chap 2 tropical geomorphology deep weathering in tropics - part 2
 
Tropical Geomorphology -weathering in Tropics - part 1- Chap 2
Tropical Geomorphology  -weathering in Tropics - part 1- Chap 2Tropical Geomorphology  -weathering in Tropics - part 1- Chap 2
Tropical Geomorphology -weathering in Tropics - part 1- Chap 2
 
Introduction to Tropical Geomorphology
Introduction to Tropical GeomorphologyIntroduction to Tropical Geomorphology
Introduction to Tropical Geomorphology
 
Wine tourism in nashik district rmid -2020
Wine tourism in nashik district    rmid -2020Wine tourism in nashik district    rmid -2020
Wine tourism in nashik district rmid -2020
 
Definition of Oceanography
Definition of OceanographyDefinition of Oceanography
Definition of Oceanography
 

Recently uploaded

Sectors of the Indian Economy - Class 10 Study Notes pdf
Sectors of the Indian Economy - Class 10 Study Notes pdfSectors of the Indian Economy - Class 10 Study Notes pdf
Sectors of the Indian Economy - Class 10 Study Notes pdf
Vivekanand Anglo Vedic Academy
 
The Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official PublicationThe Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official Publication
Delapenabediema
 
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptx
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxStudents, digital devices and success - Andreas Schleicher - 27 May 2024..pptx
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptx
EduSkills OECD
 
The approach at University of Liverpool.pptx
The approach at University of Liverpool.pptxThe approach at University of Liverpool.pptx
The approach at University of Liverpool.pptx
Jisc
 
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup   New Member Orientation and Q&A (May 2024).pdfWelcome to TechSoup   New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
TechSoup
 
Instructions for Submissions thorugh G- Classroom.pptx
Instructions for Submissions thorugh G- Classroom.pptxInstructions for Submissions thorugh G- Classroom.pptx
Instructions for Submissions thorugh G- Classroom.pptx
Jheel Barad
 
Supporting (UKRI) OA monographs at Salford.pptx
Supporting (UKRI) OA monographs at Salford.pptxSupporting (UKRI) OA monographs at Salford.pptx
Supporting (UKRI) OA monographs at Salford.pptx
Jisc
 
1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx
JosvitaDsouza2
 
Overview on Edible Vaccine: Pros & Cons with Mechanism
Overview on Edible Vaccine: Pros & Cons with MechanismOverview on Edible Vaccine: Pros & Cons with Mechanism
Overview on Edible Vaccine: Pros & Cons with Mechanism
DeeptiGupta154
 
Ethnobotany and Ethnopharmacology ......
Ethnobotany and Ethnopharmacology ......Ethnobotany and Ethnopharmacology ......
Ethnobotany and Ethnopharmacology ......
Ashokrao Mane college of Pharmacy Peth-Vadgaon
 
GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...
GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...
GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...
Nguyen Thanh Tu Collection
 
The Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdfThe Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdf
kaushalkr1407
 
Palestine last event orientationfvgnh .pptx
Palestine last event orientationfvgnh .pptxPalestine last event orientationfvgnh .pptx
Palestine last event orientationfvgnh .pptx
RaedMohamed3
 
Home assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdfHome assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdf
Tamralipta Mahavidyalaya
 
Template Jadual Bertugas Kelas (Boleh Edit)
Template Jadual Bertugas Kelas (Boleh Edit)Template Jadual Bertugas Kelas (Boleh Edit)
Template Jadual Bertugas Kelas (Boleh Edit)
rosedainty
 
Thesis Statement for students diagnonsed withADHD.ppt
Thesis Statement for students diagnonsed withADHD.pptThesis Statement for students diagnonsed withADHD.ppt
Thesis Statement for students diagnonsed withADHD.ppt
EverAndrsGuerraGuerr
 
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXXPhrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
MIRIAMSALINAS13
 
PART A. Introduction to Costumer Service
PART A. Introduction to Costumer ServicePART A. Introduction to Costumer Service
PART A. Introduction to Costumer Service
PedroFerreira53928
 
special B.ed 2nd year old paper_20240531.pdf
special B.ed 2nd year old paper_20240531.pdfspecial B.ed 2nd year old paper_20240531.pdf
special B.ed 2nd year old paper_20240531.pdf
Special education needs
 
Operation Blue Star - Saka Neela Tara
Operation Blue Star   -  Saka Neela TaraOperation Blue Star   -  Saka Neela Tara
Operation Blue Star - Saka Neela Tara
Balvir Singh
 

Recently uploaded (20)

Sectors of the Indian Economy - Class 10 Study Notes pdf
Sectors of the Indian Economy - Class 10 Study Notes pdfSectors of the Indian Economy - Class 10 Study Notes pdf
Sectors of the Indian Economy - Class 10 Study Notes pdf
 
The Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official PublicationThe Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official Publication
 
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptx
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxStudents, digital devices and success - Andreas Schleicher - 27 May 2024..pptx
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptx
 
The approach at University of Liverpool.pptx
The approach at University of Liverpool.pptxThe approach at University of Liverpool.pptx
The approach at University of Liverpool.pptx
 
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup   New Member Orientation and Q&A (May 2024).pdfWelcome to TechSoup   New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
 
Instructions for Submissions thorugh G- Classroom.pptx
Instructions for Submissions thorugh G- Classroom.pptxInstructions for Submissions thorugh G- Classroom.pptx
Instructions for Submissions thorugh G- Classroom.pptx
 
Supporting (UKRI) OA monographs at Salford.pptx
Supporting (UKRI) OA monographs at Salford.pptxSupporting (UKRI) OA monographs at Salford.pptx
Supporting (UKRI) OA monographs at Salford.pptx
 
1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx
 
Overview on Edible Vaccine: Pros & Cons with Mechanism
Overview on Edible Vaccine: Pros & Cons with MechanismOverview on Edible Vaccine: Pros & Cons with Mechanism
Overview on Edible Vaccine: Pros & Cons with Mechanism
 
Ethnobotany and Ethnopharmacology ......
Ethnobotany and Ethnopharmacology ......Ethnobotany and Ethnopharmacology ......
Ethnobotany and Ethnopharmacology ......
 
GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...
GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...
GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...
 
The Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdfThe Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdf
 
Palestine last event orientationfvgnh .pptx
Palestine last event orientationfvgnh .pptxPalestine last event orientationfvgnh .pptx
Palestine last event orientationfvgnh .pptx
 
Home assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdfHome assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdf
 
Template Jadual Bertugas Kelas (Boleh Edit)
Template Jadual Bertugas Kelas (Boleh Edit)Template Jadual Bertugas Kelas (Boleh Edit)
Template Jadual Bertugas Kelas (Boleh Edit)
 
Thesis Statement for students diagnonsed withADHD.ppt
Thesis Statement for students diagnonsed withADHD.pptThesis Statement for students diagnonsed withADHD.ppt
Thesis Statement for students diagnonsed withADHD.ppt
 
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXXPhrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
 
PART A. Introduction to Costumer Service
PART A. Introduction to Costumer ServicePART A. Introduction to Costumer Service
PART A. Introduction to Costumer Service
 
special B.ed 2nd year old paper_20240531.pdf
special B.ed 2nd year old paper_20240531.pdfspecial B.ed 2nd year old paper_20240531.pdf
special B.ed 2nd year old paper_20240531.pdf
 
Operation Blue Star - Saka Neela Tara
Operation Blue Star   -  Saka Neela TaraOperation Blue Star   -  Saka Neela Tara
Operation Blue Star - Saka Neela Tara
 

Hydraulic geometry of a river

  • 1. At-a-Station geometry Downstream geometry 22-07-2020 SPC LMT 1 Hydraulic Geometry of a river
  • 2. Hydraulic Geometry of a river • At-a-Station geometry • Downstream geometry 2SPC LMT22-07-2020 • Introduced by Luna Leopold and Maddock (1953). • Hydraulic geometry deals with variation in channel characteristics in relation to variations in discharge. • Two sets of variations take place: • variations at a particular cross section (at-a-station) and • variations along the length of the stream (downstream variations).
  • 3. • Hydraulic geometry describes the manner in which geometric parameters changes with the discharge (Q in cfs-cubic feet per second). • hydraulic characteristics of stream channels — • d=depth(mean water depth), • w=width(water-surface width), • v=Velocity (mean velocity through the cross section), • L=suspended load (usually concentration or transport, or both, of suspended sediment), • downstream slope, and • channel friction. are measured quantitatively and vary with discharge as simple power functions at a given river cross section. SPC LMT 322-07-2020
  • 6. Some observations while studying H.G. • b+f+m = 1 and a*c*k = 1 is not applicable to bed-rock channels. • At-a-station : Q (discharge) obtained at various levels is different during at-a-station. Water levels (WL- 1,2,3,4) show difference in discharge at every level. • Downstream: Q probably remains constant, but w, velocity of water and depth varies from D1 to D2 to D3 to D4. 22-07-2020 SPC LMT 6 At-a-station Downstream
  • 7. Relation between Q ,w ,v ,d, L. • These relationships at a given channel cross section and downstream when plotted on graphs are greatly similar even for river systems very different in physiographic setting. The relationships are described by the term "hydraulic geometry‘. 22-07-2020 SPC LMT 7 Higher ‘ b’ value (width)= indicates river must be from desert / glacial areas; huge deposition of sand and silt. Higher ‘ f’ value (depth)= rivers from humid areas; heavy rains; huge deposition of silt and clay; high SSL(suspended sediment load). Higher ‘ m’ value (velocity)= Rejuvenated rivers Presence of gorges and knickpoints
  • 8. Change in Q, w, v, d, and L with respect to the stream reaches. 22-07-2020 SPC LMT 8
  • 9. 22-07-2020 SPC LMT 9 Example of At-a-station geometry
  • 10. Example of Downstream geometry 22-07-2020 SPC LMT 10